SWK MOBIL GmbHInformationHead officesSt. Töniser Straße 12447804 Krefeldwww.swk.deTransport associationVerkehrsverbund Rhein-RuhrOwnership100 % – City of KrefeldEmployees414 (2016)Gauge1000 mm1435 mm (operated by Rheinbahn)LinesTramway lines4Bus lines23VehiclesTramway40Omnibus100 busesStatisticsPassengers (per year) 39,2 Mio.Transport volume (per year) 10,7 Mio. km (2004) The SWK MOBIL GmbH is a public transport operator in the city of Krefeld, and part of the Viersen district in Western Germany. The company is a fully owned subsidiary of Stadtwerke Krefeld (SWK), offering tramway and bus services. It is a member of both the Verkehrsverbund Rhein-Ruhr (VRR) and the Verkehrsgemeinschaft Niederrhein (VGN) transport associations.